These 2 Conditions provide a way to evaluate if the current Issue is or is not assigned.
In case of Assigned Condition,
In case of Unassigned Condition,
The Condition configuration may be done in XML in Workflow descriptor as follow :
<condition type="class"> <arg name="class.name">com.minyaa.workflow.condition.IsAssignedCondition</arg> </condition>
or ...
<condition type="class"> <arg name="class.name">com.minyaa.workflow.condition.IsUnassignedCondition</arg> </condition>